Question 1

DNA functions to ________________________ while RNA's function is to_____________________.

Accepted Answer

A)   store the information to make a new organism; contain the information to make a new cell.
B)   store information to produce gametes; contain the information to make a protein.
C)   store information to produce proteins; contain the information to make a DNA.
D)   store the information to make RNA; contain the information to make a protein.
E)   store information to produce a new cell; contain the information to make a gamete.F) A) and D)
G) A) and C)

Question 2

Which of the following is NOT associated with proteins?

Accepted Answer

A)   made up of amino acids bonded together
B)   denaturation destroys their shape and function
C)   are used to produce DNA
D)   are found in skin, nails and claws
E)   used to produce many types of hormonesF) A) and B)
G) None of the above

Question 3

How does DNA differ from RNA?

Accepted Answer

A)   DNA is in plants, RNA is found in animals.
B)   DNA is comprised of a double strand, RNA is a single strand.
C)   DNA is made from amino acids and RNA is made from nucleotides.
D)   DNA is used by all living things, RNA is used only in plants.
E)   DNA is seen in animals, while RNA is seen in all living things.F) A) and D)
G) B) and D)

Question 4

Digestion of sucrose,a disaccharide,results in

Accepted Answer

A)   two monomers.
B)   the release of functional groups.
C)   three monosaccharides.
D)   two glycerol units.
E)   two nucleotides.F) C) and D)
G) B) and D)

Question 5

Which functional group acts as a base when placed in solution?

Accepted Answer

A)   -OH
B)   -NH2
C)   -SH
D)   -COOH
E)   -PO4F) B) and D)
G) A) and B)

Question 6

When a person orders a hamburger with lettuce,tomato,and mayonnaise on it,which of the following would be a FALSE statement about the nutritional intake?

Accepted Answer

A)   Amino acids can be obtained from the hamburger patty.
B)   Glycogen will be obtained from the bun.
C)   Fat will be consumed from the mayonnaise.
D)   Cellulose will be consumed from the lettuce.
E)   Carbohydrates will be obtained from the tomatoF) None of the above
G) C) and D)

Question 7

Which of the following is an organic molecule?

Accepted Answer

A)   NaOH
B)   HCl
C)   CO2
D)   C6H12O6
E)   H2OF) B) and C)
G) B) and D)

Question 8

Scientists created an enzyme that will break down any type of carbohydrate.If given to humans,they could use which of the following as a new food source?

Accepted Answer

A)   hemoglobin
B)   glycerol
C)   cellulose
D)   cholesterol
E)   RNAF) C) and D)
G) All of the above

Question 9

In which of the following is the correct monomer matched with its polymer?

Accepted Answer

A)   fatty acid - DNA
B)   monosaccharide - lipid
C)   glycerol - carbohydrate
D)   amino acid - protein
E)   nucleotide - carbohydrateF) All of the above
G) None of the above

Question 10

Select the INCORRECT association.

Accepted Answer

A)   glucose - monosaccharide
B)   cellulose - building block for cell walls in plants
C)   sucrose - table sugar
D)   fructose - a polysaccharide
E)   Starch - a long chain of glucoseF) A) and B)
G) C) and E)

Question 11

The "primary structure" of a protein refers to

Accepted Answer

A)   the interactions among two or more polypeptides.
B)   the alpha helix or pleated sheets.
C)   the side groups of the amino acids.
D)   the number and sequence of amino acids.
E)   the DNA nucleotide sequence that coded for it.F) B) and E)
G) B) and D)

Question 12

A polypeptide forms a pleated sheet or a helix as its tertiary structure.

Accepted Answer

A) True 
 B)False

Question 13

DNA and RNA differ in that

Accepted Answer

A)   DNA is single stranded, contains the sugar deoxyribose and the nitrogen containing base thymine while RNA is double stranded, contains sugar ribose and the nitrogen containing base uracil.
B)   DNA is double stranded, contains the sugar deoxyribose and the nitrogen containing base thymine while RNA is single stranded, contains sugar ribose and the nitrogen containing base uracil.
C)   DNA is single stranded, contains the sugar ribose and the nitrogen containing base thymine while RNA is single stranded, contains sugar deoxyribose and the nitrogen containing base uracil.
D)   DNA is single stranded, contains the sugar deoxyribose and the nitrogen containing base uracil while RNA is double stranded, contains sugar ribose and the nitrogen containing base thymine.
E)   DNA is double stranded, contains the sugar ribose and the nitrogen containing base thymine while RNA is single stranded, contains sugar deoxyribose and the nitrogen containing base uracil.F) C) and D)
G) All of the above

Question 14

Which of the following levels of a protein are susceptible to denaturation?

Accepted Answer

A)   primary and secondary structures
B)   secondary and tertiary structures
C)   tertiary and quaternary structures
D)   primary and tertiary structures
E)   primary and quaternary structuresF) B) and E)
G) B) and C)

Question 15

Which one of the following is a function of proteins?

Accepted Answer

A)   energy storage
B)   enzymatic activity
C)   genetic coding
D)   energy source
E)   insulationF) C) and D)
G) A) and D)

Question 16

Which functional group is seen in amino acids?

Accepted Answer

A)   PO4
B)   -OH
C)   -NH2
D)   -C=OH
E)   -C-HF) B) and E)
G) B) and D)

Question 17

Glycogen is a ________ made of many __________.

Accepted Answer

A)   simple sugar; amino acids
B)   peptide; amino acids
C)   polymer; glucose molecules
D)   protein; fatty acids
E)   nucleic acid; nucleotidesF) A) and B)
G) A) and C)

Question 18

When you eat a salad,which one of the following components will pass through the body with the least amount of digestion?

Accepted Answer

A)   dressing
B)   croutons
C)   lettuce
D)   egg
E)   bacon bitsF) A) and B)
G) A) and C)

Question 19

Most animals are unable to break apart the bonds that hold cellulose together.How do grazing animals then gain their nutrition from eating primarily grasses?

Accepted Answer

A)   Bacteria that are capable of breaking cellulose into glucose live in their digestive tracts.
B)   They use photosynthesis as an alternative method of making needed glucose.
C)   They consume large amounts of grain to capture the energy they need.
D)   They use cellulose directly for energy.
E)   They convert the grain to protein.F) A) and D)
G) C) and D)

Question 20

If a material mixes readily with water it is identified as

Accepted Answer

A)   dehydrated.
B)   hydrophobic.
C)   saturated.
D)   hydrophilic.
E)   salty.F) A) and D)
G) A) and E)

Exam 3: The Organic Molecules of Life

Most animals are unable to break apart the bonds that hold cellulose together.How do grazing animals then gain their nutrition from eating primarily grasses?

Correct AnswerverifiedShow Answer

When a person orders a hamburger with lettuce,tomato,and mayonnaise on it,which of the following would be a FALSE statement about the nutritional intake?

Correct AnswerverifiedShow Answer

Scientists created an enzyme that will break down any type of carbohydrate.If given to humans,they could use which of the following as a new food source?

Correct AnswerverifiedShow Answer

The "primary structure" of a protein refers to

Correct AnswerverifiedShow Answer

Which of the following is NOT associated with proteins?

Correct AnswerverifiedShow Answer

Select the INCORRECT association.

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Which functional group is seen in amino acids?

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Which one of the following is a function of proteins?

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Which of the following is an organic molecule?

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If a material mixes readily with water it is identified as

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In which of the following is the correct monomer matched with its polymer?

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Which functional group acts as a base when placed in solution?

Correct AnswerverifiedShow Answer

DNA and RNA differ in that

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How does DNA differ from RNA?

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Glycogen is a ________ made of many __________.

Correct AnswerverifiedShow Answer

When you eat a salad,which one of the following components will pass through the body with the least amount of digestion?

Correct AnswerverifiedShow Answer

A polypeptide forms a pleated sheet or a helix as its tertiary structure.

Correct AnswerverifiedShow Answer

DNA functions to ________________________ while RNA's function is to_____________________.

Correct AnswerverifiedShow Answer

Which of the following levels of a protein are susceptible to denaturation?

Correct AnswerverifiedShow Answer

Digestion of sucrose,a disaccharide,results in

Correct AnswerverifiedShow Answer

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Glycogen is a made of many __.

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DNA functions to ____ while RNA's function is to_.

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